'''
relation
This is a parent of class 'friend' and class 'follower'
'''

class Relation:
    __uid = ''
    __rUid = ''

    def setUid(uid):
        self.__uid = uid

    def setRUid(uid):
        self.__rUid = uid

    def getTuple():
	return (self.__uid, self.__rUid)


class Follower(Relation):
    pass


class Friend(Relation):
    pass
